David James Elliott Lt., Lt. Cmdr. Harmon "Harm" Rabb, Jr. Actor Catherine Bell Maj., Lt. Col. Sarah "Mac" MacKenzie Actor John M. Jackson Actor Patrick Laborteaux Lt. j.g., Lt. Bud Roberts Actor Karri Turner Ensign, Lt. j.g. Harriet Sims Actor Chuck Carrington Actor Scott Lawrence Cmdr. Sturgis Turner Actor Nanci Chambers Actor Zoe McLellan Petty Officer Jennifer Coates Guest Star Dean Stockwell Guest Star W. K. Stratton Guest Star James Denton Guest Star Linda Tran Guest Star Catherine Ai Guest Star Dustin Nguyen Guest Star Kathlyne Pham Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer Mark Horowitz Executive Producer Terrence O'Hara Director Darcy Meyers Writer